Ball or roller bearing



J. A. OHLSSUN.

BALL 0R ROLLER BEARING.

APPLICATION FILED JUNE 25. 1917.

1,375, 28H ET 2 291 W Patented Apr. 19, 1921.

J. A. OHLSSON.

BALL 0R ROLLER BEARING.

APPLICATION FILED JUNE 26. 1917.

1,375,318. wanted Apr. 19, 1921.-

2 SHEETSSHEET 2.

JOHAN ABRAHAM O HL SSON, OF ,STOGKHOLM, SWEDEN.

BALL l ROLLER BEARING Specification of Letters Patent.

Patented Apr. 19, 1921.

Applicationflled June 26, 1917. Serial No. 177,026.

'To all whom it may concern:

Be it known that I, J OHAN ABRAHAM OHLSSON, a eub'ect of the King of Sweden, and resident of aplansbacken .3, Stockholm, in the Kingdom of Sweden, have invented certain new and useful Improvements in Ball or Roller Bearings, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to improvements in bearings provided with two or more series or rows of balls or rollers. According to the invention balls, rollers or bodies of rotation of any other suitable type (guide bodies) are provided between the series or rows of supporting balls or rollers of thebearing in such manner; that they keep the said supporting balls, etc. in fixed ofsubstantially fixed positions with relation to one another and the running of the balls is as frictionless as possible, the axial or radial thrust being besides sustained and it may be, distributed between the ball series in the most suitable mann'er. I

For the illustrating of the invention some forms of the same are shown as examples in the accompanying drawings. Figure 1 is .a longitudinal section of a ball-bearing 'arranged in accordance with the invention and provided with a free guide ring for .the guide balls. Fig. 2 isa side view partially a cross-section of the said bearing. Fig. 3 shows in a longitudinal section a part of a ball-bearing with two different types of the inner ball race. Fig. 4 is a side view partially a .cross section of ,the bearing shown in Fig. 3. Fig. 5 is a longitudinal section of a ball-bearing with two other difierent types of the inner-ball race. Fig. 6 shows in a cross section a part of a ball-bearing, in

which the supporting balls of each pair bear one against the other. longitudinal section a part of a ball-bearing arranged in accordance with this invention,

in which the inner ring is made in two pieces lde rmg 1s provided for and a stationary the guide balls. ig. 8 shows the supportsame plane. Fig. 9 shows diagrammatically substituted for the guide balls between the supporting balls. Fig. 10 shows in a-section a plug for closing an opening, through ing guide-balls 4. The bearing surface 12 of the said ringfor the balls 4 may be'straight in Fig. 7 shows in a.

1, Figs. 1 and 2, isthe outer ring of the bearlng and 2 1s the inner ring. 3, 3 designate the supporting balls of the bearing, 10-

cated in two rows, and 4, 4.- designate smaller balls providedbetween thesaid supporting balls. The said balls 4 are termed guideballs in the following specification. 5, 5'

are the ball-races of the outer ring 1 and 6, 6 are the ball-races of the inner ring 2.

Each of the said ball-races is curve-shaped in cross-section. 7 is an opening provided 1n the inner ring 2, preferably at the central plane of the bearing, through which the balls are put into the bearing. The said opening 7 may be closed by a suitably shaped Y iltllig 8, after the balls have been introduced.

c said plug may be held in its position by the friction with the ring 2 and'by the shaft (not shown) mounted in the said ring.

provided in the outer ring or openings may be provided in both rings simultaneously. I In 1g. 10 a plug 9 adapted for the same modified in many other ways, for instance it may be made from a piece of a metal strip,

suitably bent. 11 is a ring loosely mounted.

between the two rows of balls 3 and forma guide or-support or abutment to rthe cross-sectlon, concave, convex, 'or angular.

The said rin 11 will be moved by the guide balls in the. irection of rotation of the bear mglor 1n opposlte direction or be at a standstl according'as the outer ring 1 or the inner ring 2is stationary and depending on the proportion ofthe diameters of the sup-- porting balls and the guide-balls. The ring 11 may be made in two or-more pieces and,

if wanted, a plurality of free'rmgs may vbe provided at the outerside or the inner side. of the row'ofguide-balls or at both sides I of the same; 13 is a groove, which is pro- I vided in the inner side of the outer ring '1. ing balls and guide balls disposed in'the" while the a ball bearing, in which guide rollers are* and into which the ring 11 may be located,

parts of the hearing are put together. 1.

As shown in Fig. 2, there is a sli ht play ring 2 of the bearing. By the action of the centrifugal force and the pressure against the balls 3 the guide-ball's'et may during the 14: between the guide-balls4 and t e inner f rotation of the bearing occupy such a posiv I 75 An opening ,for the same purpose may be.

. balls 4. counteract the eflorts of the supporting balls to enter the opening 7, adapte opening and preventing t tion, that they automatically and in a favor able manner distribute the pressure of the shaft between the rows of supporting balls andIcause the said balls to bear against their races, even if there is an unevenness in the balls or in the races. esides, the guidefor the introducing ofthe balls into the bearing, or to bear against the plu 8, closing the said e guide-balls from while the fallng out through the opening, bearing 's at a standstill. The bearin may evidently, shape of the ball-races and their position with relation to one another and the guideballs must not under all circumstances bear against the supporting balls. Thus, for instance, a certain play may be provided in certain cases without inconvenience. In the form of the invention shown in Figs. 1 and 2 the object of the guide-balls substantially is td separate each pair of supporting balls located side by side from the adjacent pairs of balls and to prevent the supporting balls from falling down into the opening 7 with the four adjacent supporting balls (or the center point of each guide-ball) are located substantially in the 'plane of the 7 center points of the said supporting balls.

evidently, be of any but for the adapttermined by the ring 11.

In Figs. 3 and 5-difi'erent forms of the ball-races are shown, designated by I, II, III and IV. In both the said figures the ball-race 15 of the outer ring 16 is spherical, concave in cross-section, in order that ad- 'ustment of the bearing to some extent ma e possible. For the same purpose the ball: race of the inner ring may be spherical, convex in cross-section. Besides the outer ring 16 has an inner flange 17 at one side or at both sides in order to prevent the inner ring or the outer ring from being swung laterally for such a distance, that the balls can leave the bearing. According to form I the ballrace 18 of the inner ring 19 is so shaped,

' that the contact points of the supporting balls 3 with the outer and inner rings 16,

19 are located in the same plane perpendicuof a the gulde-balls against the supporting alls be adjusted by changing the' Pref erably, the contact points of each guide-ball dimensions of the bearing thein the hearing. The position. of the guide-balls may in eachcase be de lar to the axis of the bearing. The part of the 1nner ring forming the ball-race proper 1s circular in cross-section, the-radius of the c1rcle being shorter than the radius of the spherlcal ball-race of the outer ring. According to the form II of Fig. 3 the ballrace 20 of the inner ring 19 1S circular in cross-section, the center point of the circle bemglocated on the line, which connects the center point of the bearin with the center point ofthe supporting ba 1 and, it may be, the contact. polnt of the ball with the ballrace of the outer ring. According to form III-of Fig. 5 the ball-race 21 of the inner ring has substantially the same shape as in the form I but the part forming the ballrace proper 1s circular in cross-section, the radius of the circle having the same length as the radius of the spherical'ball-race of the outer ring. According to form IV of Fig. 5 the ball-race 22 of the inner ring 19 has the same sha e as the ball-races of the nner ring 2 of ig. 1, while the ball-race of the outer ring is spherical, as stated above. Many other forms of the races may, evidently, be used.

The bearing may, evidently, be provided with a ball retainer, Fig. 11, for one of the rows of supporting balls or for both rows of supporting balls, each retainer 23 consisting of one or more wires formed into loops 24, separating the supporting balls 3. Such a retainer may be provided also for v the guide-balls.

In the form of the invention shown in Fig. 6 the supporting balls 3 bear against one another. The said balls are separated by guide-balls 4. v In the bearing shown in Fig. 7 the loosely mounted ring 11, Figs. 1 and 2, is omitted and for the same a ring-shaped flange 25 rovided on the outer ring 1 and extending inward is substituted, which flange forms a support or guide to the guide-balls 4. In the said bearing the inner ring is made in two parts 26, 27 completing one another, Preferably, the contact surfaces 28 of the said parts are oblique, as shown. The said parts 26, 27, may be connected by any suitable means, for instance by a'ring 29, provided at its ends with flanges 30, engaging grooves in the parts 26, 27. The outer ring may, evidently, be arranged in a similar 'tical as the venting the balls of the rows from passing one another, for instance metal strips bent into the shape of rhombs or disks provided with spherical recesses for the balls. The

said arrangements, however, are not so pracguide-balls, etc., owing to the ing friction results from the same.

Instead of spherical supportin balls other supporting bodies may be use which approach to or fully pass into the shape of rollers.

fact that sli The loosely mounted supporting or guide rality of rows of supporting bodies of rotation, a solid outer ring, a solid irmer ring separated grooves provided for -the said rows in one of the said rings, guide-bodies of rotation located between the rows of supporting bodies and Separating the bodies of each row from one another, and a guide member for the said guide bodies, said guide member being interposed loosely between the solid outer and inner rings and between the rows of su porting bodies."

2. In a bearin the combination of a plu-' rality of rows 0 supporting bodies'of rotation, a solid outer ring, a solid inner ring, separated ooves providedfor the said rows in one of t e said rings, thesaid ooves being so shaped that the supporting bodies bear against the outer and inner rings at points located substantially in the same plane, perpendicular to the axis of the bearing, guide bodies of rotation located between' the rows of supporting bodies and separat--- ing the bodies of each row from one another, and. a guide member for the said guide bodies of rotation, said guide member being interposed loosely between the solid outer and mner rin s and between the rows of supporting b0 'es.

3. In a bearing, the combination of aplurality of rows of supporting bodies of rotation, a solid outer ring, a solid inner ring,

separated grooves provlded for the said rows a in one of the said rings, guide bodies of rota- .tion located between the rows of supporting bodies and separating the bodies of each row from one another, a radially disposedv opening in one of said solid rings for the insertion and removal of the supporting and guide bodies, and a guide member for the guide bodies, said member'being interposed loosely between the solid outer and inner and between the rows of supporting rings bodies.

4. In a bearing,the combination of a plurality of rows of supporting bodies of rotation, a solid outer ring, a solid inner ring,

separated grooves provided for the said rows 7 in one of the said rings, guide bodies of rotation located between the rows of supporting bodies and separating the bodies of each row from one another, a radially disposed opening in one of said solid rings for the insertion and removal of the supporting and guide bodies, a plug for closing said open-' mg and a guide member for] the guide T bodies, said member being interposed loosely V 1 between the solid outer and inner rings and between the rows of supporting bodies.

"In witness whereof, I have hereunto signed my name.

- JO-HAN ABR AM OHLSSON. 

